Reciprocating power tool having a counterbalance device
US9061411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2013 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18256
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A reciprocating power tool that includes a drive system having a first driven gear that includes a spindle counterbalance weight and a second driven gear that includes a spindle counterbalance weight. The first driven gear and the second driven gear rotate in opposite directions about an axis of rotation in response to rotation of a driving gear by a motor. The power tool further includes a spindle having a longitudinal axis and a first end that is configured to support a tool element. The spindle is coupled to one of the first driven gear and the second driven gear by a scotch yoke mechanism to reciprocate the spindle with respect to a housing of the power tool along the longitudinal axis of the spindle in response to operation of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.